/Engine/Source/Editor/Sequencer/Public/ISequencerSection.h
Create a custom category model
virtual [TSharedPtr](API\Runtime\Core\Templates\TSharedPtr)< [UE::Sequencer::FCategoryModel](API\Editor\Sequencer\MVVM\ViewModels\FCategoryModel) > ConstructCategoryModel ( [FName](API\Runtime\Core\UObject\FName) InCategoryName, const [FText](API\Runtime\Core\Internationalization\FText) & InDisplayText, [TArrayView](API\Runtime\Core\Containers\TArrayView)< const [FChannelData](API\Editor\Sequencer\ISequencerSection\FChannelData) > Channels ) const